<template>
    <div>
        <el-card>
            <el-row>
                <el-col>
                    <el-button type="primary">添加角色</el-button>
                </el-col>
            </el-row>
            <!--            角色列表区-->

            <el-table :data="roleList" border stripe>
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <el-row :class="['bdbottom', i1===0?'bdtop':'','vcenter']"
                                v-for="(item1,i1) in scope.row.children"
                                :key="item1.id">
                            <!--                            渲染一级-->
                            <el-col :span="5">
                                <el-tag @close="removeRightById(scope.row,item1.id)" closable>{{item1.authName}}
                                </el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                            <!--                            渲染二级和三级-->
                            <el-col :span="19">
                                <el-row :class="[ i2===0?'':'bdtop','vcenter']" v-for="(item2 ,i2) in item1.children"
                                        :key="item2.id">
                                    <el-col :span="6">
                                        <el-tag @close="removeRightById(scope.row,item2.id)" closable type="success">
                                            {{item2.authName}}
                                        </el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col>
                                    <el-col :span="18">

                                        <el-tag @close="removeRightById(scope.row,item3.id)" closable type="warning"
                                                v-for="( item3,i3) in item2.children" :key="item3.id">
                                            {{item3.authName}}
                                        </el-tag>
                                    </el-col>
                                </el-row>
                            </el-col>
                        </el-row>
                    </template>
                </el-table-column>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作" width="300px">
                    <template slot-scope="scope">
                        <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
                        <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
                        <el-button size="mini" type="warning" @click="showSetRightDialog(scope.row)" icon="el-icon-setting">分配权限
                        </el-button>
                    </template>
                </el-table-column>

            </el-table>
        </el-card>
        <el-dialog
                title="分配权限"
                :visible.sync="dialogVisible"
                width="30%">
            <el-tree :default-checked-keys="defKeys" ref="treeRef"
                     default-expand-all node-key="id"
                     show-checkbox :data="rightsList"
                     :props="defaultProps"
            ></el-tree>
            <span slot="footer" class="dialog-footer">
    <el-button @click="dialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        data() {
            return {
                //所有角色列表
                roleList: [],
                dialogVisible: false,
                rightsList:[],
                defaultProps: {
                    children: 'children',
                    label: 'authName'
                },
                defKeys:[],
                roleId:null,
            }

        },
        created() {
            this.getRolesList();
        },
        mounted() {

        },
        methods: {
            //获取所有角色列表
            async getRolesList() {
                const {data: res} = await this.$http.get("roles");
                if (res.meta.status !== 200) {
                    return this.$message.error("获取失败");
                }
                this.roleList = res.data;
            },
            //根据id删除对应权限
            removeRightById(role, rightId) {
                //弹框提示
                this.$confirm('此操作将永久删除角色?', '提示', {
                    confirmButtonText: '确定',

                    cancelButtonText: '取消',
                    type: 'warning'
                }).then(async () => {
                    const {data: res} = await this.$http.delete(`/roles/${role.id}/rights/${rightId}`);
                    if (res.meta.status !== 200) {
                        this.$message.error("删除失败")
                    } else {
                        this.$message.success("删除成功")
                        role.children = res.data
                    }
                }).catch(() => {
                    this.$message({
                        type: 'info',
                        message: '已取消删除'
                    });
                });
            },
           async showSetRightDialog(role) {
                this.roleId=role.id
                this.defKeys=[]
               const {data:res}=await this.$http.get("rights/tree");
               if(res.meta.status!==200){
                   this.$message.error("获取权限失败")

               }else{
                   this.rightsList=res.data;

               }
               //递归获取三级节点
               this.getLeafKeys(role,this.defKeys)
                this.dialogVisible=true;


            },
            //通过递归形式获取角色下的所有三级权限的id,
            getLeafKeys(node,arr){
                if(!node.children){
                    return arr.push(node.id);
                }
                node.children.forEach(item=>{
                    this.getLeafKeys(item,arr)
                })
            },
            //为角色分配权限
           async allotRights(){
                const keys=[
                    ...this.$refs.treeRef.getCheckedKeys(),
                    ...this.$refs.treeRef.getHalfCheckedNodes()
                ]
                const idStr=keys.join(",");
               const {data:res}=await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr});
               if(res.meta.status!==200){
                   this.$message.error("修改失败")
               }else{
                   this.$message.success("修改成功")
                   this.getRolesList()
                   this.dialogVisible=false
               }
            }
        }
    }
</script>

<style lang="less" scoped>
    .el-tag {
        margin: 7px;
    }

    .bdtop {
        border-top: 1px solid #eee;
    }

    .bdbottom {
        border-bottom: 1px solid #eee;
    }

    .vcenter {
        display: flex;
        align-items: center;

    }
</style>